test: harden windows lsp test cleanup

src/cli/doctor/checks/lsp.test.ts

@@ -22,15 +22,17 @@ describe("lsp check", () => {
       // #given
       const spawnSpy = spyOn(Bun, "spawn")
 
-      // #when getting servers info
-      await lsp.getLspServersInfo()
+      try {
+        // #when getting servers info
+        await lsp.getLspServersInfo()
 
-      // #then should not spawn which
-      const calls = spawnSpy.mock.calls
-      const whichCalls = calls.filter((c) => Array.isArray(c) && Array.isArray(c[0]) && c[0][0] === "which")
-      expect(whichCalls.length).toBe(0)
-
-      spawnSpy.mockRestore()
+        // #then should not spawn which
+        const calls = spawnSpy.mock.calls
+        const whichCalls = calls.filter((c) => Array.isArray(c) && Array.isArray(c[0]) && c[0][0] === "which")
+        expect(whichCalls.length).toBe(0)
+      } finally {
+        spawnSpy.mockRestore()
+      }
     })
   })
 

src/tools/lsp/config.test.ts

@@ -24,14 +24,20 @@ describe("isServerInstalled", () => {
       console.error(`Failed to clean up temp dir: ${e}`)
     }
 
-    const keys = ["PATH", "Path", "PATHEXT"]
-    for (const key of keys) {
-      const val = savedEnv[key]
-      if (val === undefined) {
-        delete process.env[key]
-      } else {
-        process.env[key] = val
-      }
+    const pathVal = savedEnv.PATH ?? savedEnv.Path
+    if (pathVal === undefined) {
+      delete process.env.PATH
+      delete process.env.Path
+    } else {
+      process.env.PATH = pathVal
+      process.env.Path = pathVal
+    }
+
+    const pathextVal = savedEnv.PATHEXT
+    if (pathextVal === undefined) {
+      delete process.env.PATHEXT
+    } else {
+      process.env.PATHEXT = pathextVal
     }
   })